What is the square area of the test area when testing SFRM thickness on a deck?

When testing the thickness of Spray-Applied Fire-Resistive Material (SFRM) on a deck, a standardized test area is typically utilized to ensure consistency in measurement and compliance with regulations. The standard measuring square area for such testing is often defined as 144 square inches, which corresponds to a square area that measures 12 inches by 12 inches. This dimension is widely accepted in industry practices as it provides a sufficient and manageable size for applying and evaluating the fireproofing material's thickness.

Understanding this measurement is crucial because it impacts the effective application of fire-resistive materials, contributing to the structural integrity and overall fire safety of the building. Knowing the standard area also helps practitioners and inspectors clearly communicate results and adhere to safety codes and guidelines.